1290-Round Table tournament held near Winchester, England, in imitation of King Arthur, to commemorate betrothal of daughter of Edward I, and attended by the king

1862 First pasteurization test is completed by Frenchmen Louis Pasteur and Claude Bernard

1902 Marie and Pierre Curie isolate the radioactive compound radium chloride

1968-British politician Enoch Powell makes his controversial "Rivers of Blood" speech

1980-Climax of the Berber Spring in Algeria sees hundreds of Berber political activists arrested

1999-Columbine High School massacre: Eric Harris and Dylan Klebold kill 13 people and injure 24 others before committing suicide at Columbine High School, Colorado

2010-The Deepwater Horizon drilling rig explodes, killing 11 and causing the rig to sink, causing a massive oil discharge into the Gulf of Mexico and an environmental disaster

Source: Korea Times News